japh(r) by Chris Strom: Simple Meal Attributes

Friday, May 29, 2009

Simple Meal Attributes

‹prev | My Chain | next›

Next up in the meal details scenario is to actually see some details of the meal. Specifically:

Then I should see the "Focaccia!" title

Cucumber is telling me to use this as starting point:

Then /^I should see the "([^\"]*)" title$/ do |arg1|
  pending
end

Little more than that is actually required to verify this step:

Then /^I should see the "([^\"]*)" title$/ do |title|
  response.should have_selector("h1", :content => title)
end

That step fails, of course, since the Sinatra action is not pulling back the meal from CouchDB and, even if it was, there is no Haml template to present the CouchDB data. So let's add these...

I implement the body of the show meal action such that it retrieves the meal data from CouchDB:

      it "should request the meal from CouchDB" do
        RestClient.
          should_receive(:get).
          with(/2009-05-13/).
          and_return('{"title":"Foo"}')

        get "/meals/2009/05/13"
      end

With Sinatra pulling the data from CouchDB, it is time to present that data via a Haml view.

For now, I will describe displaying the meal data proper (links to breadcrumbs, other meals and recipes will come later). To display these attributes, I supply each of my examples with:

  before(:each) do
    @title  = "Meal Title"
    @summary = "Meal Summary"
    @description = "Meal Description"
    assigns[:meal] = @meal = {
      'title'       => @title,
      'summary'     => @summary,
      'description' => @description
    }
  end

The specs that describe showing these three meal attributes:

  it "should display the meal's title" do
    render("/views/meal.haml")
    response.should have_selector("h1", :content => @title)
  end

  it "should display the meal's summary" do
    render("/views/meal.haml")
    response.should have_selector("#summary", :content => @summary)
  end

  it "should display a description of the meal" do
    render("/views/meal.haml")
    response.should have_selector("#summary + #description",
                                  :content => @description)
  end

I still have not decided if I like Haml, but it does make implementing these three examples simple:

%h1
  = @meal['title']

#summary
  = @meal['summary']

#description
  = @meal['description']

Before working my way out, I am also going to note that both the meal summary and description should be wiki-fied. The example for a wiki-fied summary:

  it "should wikify the meal's summary" do
    assigns[:meal]['summary'] = "paragraph 1\n\nparagraph 2"
    render("/views/meal.haml")
    response.should have_selector("#summary p", :content => "paragraph 1")
  end

That fails the first time I run it:

1)
'meal.haml should wikify the meal's summary' FAILED
expected following output to contain a <#summary p>paragraph 1</#summary p> tag:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<html><body>
<h1>
  Meal Title
</h1>
<div id="summary">
  paragraph 1
  
  paragraph 2
</div>
<div id="description">
  Meal Description
</div>
</body></html>
./spec/views/meal.haml_spec.rb:28:

Adding a call to my wiki helper makes that pass:

#summary
  = wiki @meal['summary']

After following the same path to wiki-fy the meal description, it is time to work my way back out to Cucumber to verify that I have put everything together properly:

cstrom@jaynestown:~/repos/eee-code$ cucumber features -n \
>   -s "Browsing a meal on a specific date"
Feature: Browse Meals

  So that I can find meals made on special occasions
  As a person interested in finding meals
  I want to browse meals by date

  Scenario: Browsing a meal on a specific date
    Given a "Focaccia!" meal enjoyed on March 3, 2009
    And a "Focaccia" recipe from March 3, 2009
    When I view the "Focaccia!" meal
    Then I should see the "Focaccia!" title
    And I should see a link to the "Focaccia" recipe in the menu
      expected following output to contain a <a>the "Focaccia" recipe in the menu</a> tag:
      <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
      <html><body>
      <h1>
        Focaccia!
      </h1>
      <div id="summary">
        <p>meal summary</p>
      </div>
      <div id="description">
        <p>meal description</p>
      </div>
      </body></html>
       (Spec::Expectations::ExpectationNotMetError)
      features/browse_meals.feature:42:in `And I should see a link to the "Focaccia" recipe in the menu'
    When I click the "March" link
    Then I should see "Focaccia!" in the list of meals
    When I click the "Focaccia" link
    And I click the "2009" link
    Then I should see "Focaccia!" in the list of meals
    When I click the "Focaccia!" link
    And I click the "Focaccia" link
    Then I should see the "Focaccia" recipe

1 scenario
1 failed step
8 undefined steps
4 passed steps

Indeed, I have made it past the Meal should display a title step. I am now onto the next step, where it should display a recipe menu item.

That's a good stopping point for tonight. I like stopping on Red in the Red-Green-Refactor cycle. It makes it easy know where to pick up next!
(commit)

japh(r) by Chris Strom

Friday, May 29, 2009

Simple Meal Attributes

No comments:

Post a Comment